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This products is a battery-powered
Duty cycle: 1% ~ 99%
The F21P module integrates RF
It is the first Arduino board based on a 32-bit ARM core microcontroller
with USB cable
ANENG MD-3003B Metal Detector cf-type-smart-car-kit This products is a battery-poweredProperty: High precision Simple and easy to use, no need to adjust. 3. 9V battery reduced to about 7V and sensing distance sealing tape. Electricity saving, can work continuously for more than 40 hours. There are two options for alarm mode: sound and vibration. When the battery is dead, automatic continuous sound or vibration alarm. With power on and off sound or vibration prompt function. There are high and low sensitivity options. There is an
